128421747

素因数分解:

$3^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{2161}}^1$

素因数の和:2272

約数の個数: 32

約数和(自身を含む): 199249920

約数和(自身を除く): 70828173

約数列:

[1, 3, 9, 27, 31, 71, 93, 213, 279, 639, 837, 1917, 2161, 2201, 6483, 6603, 19449, 19809, 58347, 59427, 66991, 153431, 200973, 460293, 602919, 1380879, 1808757, 4142637, 4756361, 14269083, 42807249, 128421747]

約数ペア:

[(1, 128421747), (3, 42807249), (9, 14269083), (27, 4756361), (31, 4142637), (71, 1808757), (93, 1380879), (213, 602919), (279, 460293), (639, 200973), (837, 153431), (1917, 66991), (2161, 59427), (2201, 58347), (6483, 19809), (6603, 19449)]